647461123 has 4 divisors (see below), whose sum is σ = 648015208. Its totient is φ = 646907040.

The previous prime is 647461121. The next prime is 647461127. The reversal of 647461123 is 321164746.

647461123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 647461123 - 2¹ = 647461121 is a prime.

It is a super-2 number, since 2×647461123² = 838411811592842258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (647461121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275286 + ... + 277627.

It is an arithmetic number, because the mean of its divisors is an integer number (162003802).

Almost surely, 2^647461123 is an apocalyptic number.

647461123 is a deficient number, since it is larger than the sum of its proper divisors (554085).

647461123 is a wasteful number, since it uses less digits than its factorization.

647461123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554084.

The product of its digits is 24192, while the sum is 34.

The square root of 647461123 is about 25445.2573773582. The cubic root of 647461123 is about 865.1098006228.

The spelling of 647461123 in words is "six hundred forty-seven million, four hundred sixty-one thousand, one hundred twenty-three".